Substantial engine knocking: Conditions
WARNING: This page is about a different car, the 2003 Saab 9-3 and 2002 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.
The following conditions apply for the current fault symptom:
- Wrong fuel grade used. Fuel grade RON 91-98 octane is approved for petrol engines. In certain markets, petrol is sold under the designation "regular", where the grade is not specified.